MAP3524 MGCHIP | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 4
Technical content
Features
8.5V to 18V Input Voltage Range Quasi-Resonant Mode LED Current Compensation Function Independent Direct PWM Dimming Input 2% Current Sensing Voltage Accuracy Fault Output (FLT pin) ▪ MOSFET Drain-Source Short Detection ▪ VCC Over Voltage Protection Detection Short Circuit Protection Current Sense Resistor Short Protection VCC Under Voltage Lock Out 20 Leads SOIC Package with Halogen-free
Applications
High Brightness white LED backlighting for LCD TVs General LED lighting applications
Ordering Information
Temperature Range Package RoHS Status MAP3524SIRH MAP3524 -40℃ to +85℃ 20Leads SOIC Halogen Free Typical Application
Datasheet Version 1.1 Oct 2020 MAP3524 datasheet – Quasi-Resonant Mode Buck Controller for LED Backlight Pin Configuration 1110 PWM1 COMP1 REF1 ANA_DIM ZCD1 CS1 PGND1 GATE1 GND GATE2 ADIM1 FLT REF2 VCC PGND2 CS2 COMP2 ADIM2 ZCD2PWM2 MAP3524 SOIC-20L Pin Description Pin Name Description
1 PWM1 PWM Dimming for Ch1
2 ADIM1 Internal Analog Dimming for Ch1
3 COMP1 LED Current Accuracy Compensation for Ch1
4 REF1 ADIM Buffer output for Ch1
5 ANA_DIM External Analog Dimming input
6 FLT Fault output
7 REF2 ADIM Buffer output for Ch2
8 COMP2 LED Current Accuracy Compensation for Ch2
9 ADIM2 Internal Analog Dimming for Ch2
10 PWM2 PWM Dimming for Ch2
11 ZCD2 Zero Current Detection for Ch2
12 CS2 Current Sense for Ch2
13 PGND2 Power Ground for Ch2
14 GATE2 GATE drive output for Ch2
15 GND Ground
16 VCC Power supply input
17 GATE1 GATE drive output for Ch1
18 PGND1 Power Ground for Ch1
19 CS1 Current Sense for Ch1
20 ZCD1 Zero Current Detection for Ch1
Note 1: Connect external resistor to PGNDx to sense the external power MOSFETx source current as shown in typical application
Datasheet Version 1.1 Oct 2020 MAP3524 datasheet – Quasi-Resonant Mode Buck Controller for LED Backlight Functional Block Diagram ZCD1 GATE DRIVER GATE1 Q QS R CS1 LDO UVLO VCC Enable MOSFET DS ShortLEB 100mV ADIM1 COMP1 REF1 ANA_DIM ADIM FLT PWM1 GND ZCD2 GATE DRIVER Q QS R CS2 MOSFET DS ShortLEB 100mV ADIM2 COMP2 PWM2 FLT Enable REF2 GATE2 PGND1 PGND2 Average- Mode Control Logic Current Compensation Current Compensation Average- Mode Control Logic
Datasheet Version 1.1 Oct 2020 MAP3524 datasheet – Quasi-Resonant Mode Buck Controller for LED Backlight Physical Dimensions
20 Leads SOIC
Magnachip Semiconductor Ltd. doesn’t not recommend the use of its products in hostile environments, including, without limitation, aircraft, nuclear power generation, medical appliances, and devices or systems in which malfunction of any product can reasonably be expected to result in a personal injury. Seller ’s customers using or selling Seller ’s products for use in such applications do so at their own risk and agree to fully defend and indemnify Seller. Magnachip reserves the right to change the spe cifications and circuitry without notice at any time. Magnachip does not consider responsibility for use of any circuitry other than circuitry entirely included in a Magnachip product. is a registered trademark of Magnachip Semiconductor Ltd.